import Vue from 'vue'
import Router from 'vue-router'
import DepartmentRoute from './modules/department'
import EmployeeRoute from './modules/employee'
import ApprovalRoute from './modules/approval'
import AttendanceRoute from './modules/attendance'
import PermissionRoute from './modules/permission'
import RoleRoute from './modules/role'
import SalaryRoute from './modules/salary'
import SocialRoute from './modules/social'
Vue.use(Router)

/* Layout */
import Layout from '@/layout'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
// 每一个页面都是一个一级路由套着children子路由
// 页面中有些路由规则是没有权限的, 叫静态路由
export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true
  },
  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },
  // hidden: true, // 路由规则上添加了hidden:true 是不会在左侧sidebar中显示的
  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [{
      path: 'dashboard',
      name: 'Dashboard',
      component: () => import('@/views/dashboard/index'),
      meta: { title: '首页', icon: 'dashboard' } // 路由元信息(就是路由上的字段) title是导航的文本icon是图标
    }
    ]
  }
  // 404 page must be placed at the end !!!
]
// 有权限的页面  动态路由
export const asyncRoutes = [
  DepartmentRoute,
  RoleRoute,
  EmployeeRoute,
  PermissionRoute,
  ApprovalRoute,
  AttendanceRoute,
  SalaryRoute,
  SocialRoute
]
const createRouter = () => new Router({
  mode: 'history', // 目前我们处于脚手架环境,支持历史模式的,但是项目最终要打包上线 yarn build 得到dist目录,进行上线, dist目录 脱离了 脚手架环境的, 也就需要服务端对历史模式进行支持 如果服务端不做历史模式的支持处理, 刷新页面 会出现白屏或者404的问题
  scrollBehavior: () => ({ y: 0 }),
  routes: constantRoutes
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router
